Machine foe engeaving in eelievo



(NoModeL) 3 Sheets-Sheet 1.,

. P. OTTO.

MACHINE FOR ENGRAgVING IN RELIEVO- N0. 469,047. OP. Patented Feb. 16,1892.

1 n A e g l 3 SheetsSheet 2.

Patented- Feb. 16. 1892.-

P. OTTO. MACHINE FOR ENGRAVING IN R ELIEV O (No Model.)

(No Model.) 3 Sheetls-Sheet 3..

PQOTTO. a

MACHINE FOR ENGRAVING IN RELIEVO.

Patented Feb., 16, 1892.

UNITED STATES PATENT OFFICE. I

PAUL OTTO, OF BERLIN, GERMANY.

MACHINE FOR E NGRAVING IN RILIEVO.

SPECIFICATION forming part of Letters Patent No. 469,047, dated February16, 1892.

. Application filed November 30, 1891. Serial No. 413,465. (No model.)

To all whom, it may concern.-

Be it known that I, PAUL OTTO, a subject of the Emperor of Germany,residing at the city of Berlin, in the Kingdom of Prussia, Germany, haveinvented a certain new and use ful Improvement in Machines for Engravingor Carving in Rilievo, of which the following claimed.

The characteristic features of my invention will be more fullyunderstood from the following description, taken in connection with theaccompanying drawings, forming part hereof, and in which- Figure 1 is aside elevation of the upper or operative portion of a machine forengraving or carving in rilievo embodying features of my invention.Fig.2 is a top or plan View of the same. Fig. 3 is an elevation of thelefthand end of the machine illustrated in Fig. 1, and Fig. 4 is asimilar view of the righthand end of the machine.

In the drawings, A is a bed-plate provided upon its upper surface withlongitudinally- V ranging ways and adapted to be supported by a table orother frame-work. (Not shown.)

D is a standard mounted upon the Ways of the bed-plate A and adapted tobe clamped thereto. The standard B is provided with vertically-rangingways, in which a tool-carrier C is afforded a range of end-play. This,

carrier 0 is provided with sidewise projecting arms for a purpose to bepresently de scribed.

D is a tool-stock spindle rotatably mounted in the respective arms ofthe carrier 0 and adapted to be rotated by means of a drivingpulley D orin any other preferred manner.

E is a graver or cutter connected with the lower extremity of thetool-stock spindle.

F is a slide-rest adapted to carry the material or blank to be carved orengraved and afforded a free range of motion in one direction in ahorizontal plane.

G is a support fitted to the ways of the bedplate A and provided uponits under side with a clamping device for retaining it to place.

His a pantograph of the usual construction, mounted upon the support Gand havin g one of its operative extremities connected with the rest Fby a bolt or pin f and having its other extremity provided with a smallsocket J.

K is a non-rotatable copying or pattern bit afforded a range of end-playin the socket J and having a rounded or hemispherical upper extremityand a comically-shaped point or lower extremity corresponding with theangle of the cutting-edge of the graver or cutter E.

L is a carrier adapted to support the pattern and adjustably connectedwith the bedplate A by'means of suit-able dovetail ways and clampingdevices, as shown in Fig. 1.

M is a pillar adj ustably connected with the ways of the bed-plate bymeans of suitable clamping devices. I

N and N are levers pivotally connected at or near their respectivecenters to the pillar M. The respective left-hand extremities of theselevers N and N are pivotally connected with a vertical stem 0, providedat the lower extremity with a horizontal plate Q. The right-handextremities of these levers are pivotally connected with a bar R,carrying a counter-weight S, which counterbalances the weight of theplate Q. The object of the parallel motion comprising the levers N and Nand their accessories is to afford the stem 0 and plate Q a range ofplay in a vertical direction without being rotated or shifted out of thevertical and horizontal positions-that is to say, in order to maintainthe stem and plate parallel with themselves inall positions of elevationand depression.

T is a rail projecting fromthe standard B and provided with a collar'U,which may be slid toward the right or left and then clamped to place inorder to permit of the required adjustment of the machine.

V is a lever pivotally connected at or near the center thereof with thecollar U. This lever V is connected at c. with the carrier 0 by means ofalink y. The right-hand extremity of the leverVis provided with anadjustable pin W, adapted to contact with a cap P, mounted on the upperextremity of the bar 0, and the left-hand extremity of the lever V isprovided with a counter-weight S for counterbalancing the weight of thelever and its accessories.

O is a spiral spring interposed between the standard B and carrier 0 inorder to shift the latter normally upward and thus maintain the pin W incontact with the cap L and the plate Q in contact with the roundedextremity of the copying-bit K.

The mode of operation of the hereinabovedescribed machine is as follows:A blank to be carved or engraved is attached to the slide-rest F,and apattern or model ismounted on the carrier L, and the latter is clampedto place in the ways of the table A. The copying-bit K is then caused,manually, to traverse every portion of the embossed and figured parts ofthe pattern or model and the cutter or graver is rapidly rotated. Themovements of the copying-bit K in a horizontal plane are accuratelytransferred to the slide-rest F by means of the pantograph H, and themovements of the copying-bit K in a vertical direction are similarlytransmitted to the graver or cutter E through the instrumentality of theplate Q,

spindle O, lever V,and carrier 0. The result of these two operations isto cause the rotating graver or cutter E to carve or engrave upon theblank a fac-simileof the embossed and figured portions of the pattern ormodel. In the drawings the machine is illustrated as adapted to reducethe facsimile of the model or pattern to one-fourth size; but the sizeof the fac-simile is immaterial and may be increased or diminished bymeans of the pantograph H and sliding collar U, as will be readilyunderstood by reference to Fig. 1.

Having thus described the nature and objects of my invention, what Iclaim as new, and desire to secure by Letters Patent, is

1. A machine for engraving in rilievo,comprising a blank-supportingslide-rest movable in one plane, a rotating cutter or graver afforded arange of play in a direction perpendicular to said plane, amodel orpattern, a copying-bit adapted .to traverse the surface of the. model orpattern, a pantograph connected with said copying-bit and slide-rest,and a parallel-motion mechanism connected with said copying-bit andcutter or graver, substantially as and for the purposes set forth.

2. A machine for engraving in rilievo, comprising a blank-supportingslide-rest movable in one plane, a rotating cutter or graver afforded arange of play transversely of the slide-rest, a model or pattern, meansfor supporting the'model or pattern, a pantograph connected with saidslide-rest and provided with a socket, a copying-bit afforded a range ofend-play in said socket, a horizontal plate contacting with saidcopying-bit and afforded a range of vertical movement, and a pivotallever connected with said plate and cutter'or graver, substantially asand for the purposes set forth.

3. A machine for engraving in rilievo, comprising a blank-supportingslide-rest, a rotating cutter or graver movable transversely of theslide-rest, a model or pattern, means for supporting the model orpattern, a pantograph connected with said slide-rest and provided with asocket, a copying-bit afforded a range of end-play in said socket, ahorizontal plate contacting with said copying-bit and provided with aspindle, a counterbalanced parallel-motion mechanism carrying saidspindle, and a pivotal lever connected with said spindle and cutter orgraver, substantially as and for the purposes set forth. 4

4. A machine for engraving in rilievo, C0111- prisinga blank-supportingslide-rest, a pantograph connected with said slide-rest and providedwith a copying-bit, a carrier working transversely of the slide-rest, agraver orcutter journaled in said carrier, a pivotal lever connectedwith said carrier, and means interposed between said lever andcopying-bit and adapted to transmit the vertical movements of the bit tothe'carrier, substantially as and for the purposes set forth.

5. A machine for engraving in rilievo, comprising a copying-bit K, asliding rest F for supporting a blank, a graver or cutter E, apantograph ll, interposed between the cutter and slide-rest, a plate Q,and a system of levers N, O, W, Y, and U, interposed between the bit andcutter or graver, substantially as and for the purposes set forth.

In witness whereof I have hereunto set my hand in presence of twowitnesses.

PAUL OTTO. \Vitnesses:

W. H. EDWARDs, W. HAUPT.

